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Invert Mounting Of Subs

nveous

By nveous,
in Car Audio & Electrical

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nveous Contributor

nveous

Posted
Posted

Hey there guys...

Mind my ignorance but i have done and installation in my 33 where i have custom made two 12Inch boxes to reverse mount the subs on each side of the boot.

Now the problem im having is that once the boot is opened i loose about 60-70% of bass... I understand that the subs are using the actual volume of the boot to produce the bass but how is it that show cars which have inverted subwoofers produce that huge bass....? the fibreglass enclosures i made are roughly 24L which is what is specified for the pioneer subs...

The subs themselves are 500w RMS each running of a 1000w RMS D class monoblock.....

However i think its nothing to do with the actual power side of things more to do with, volumes and porting or not porting... i assume???? My enclosures are sealed by the way but any help or advice would be appreciated as its frustrating me lolz....

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https://www.sau.com.au/forums/topic/272905-invert-mounting-of-subs/
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Crans Mentor

Crans

Posted
Posted

The inversion of the subs will only effect the enclosure volume(As in magnets are not longer taking up enclosure space).

You are also wrong in saying the subs are now using the boot as the enclosure.

The show cars will have systems that are alot more powerfull that yours to produce the open boot results

G2GLOL Apprentice

G2GLOL

Posted
Posted (edited)

Make sure they're wired OUT of phase if they are inverted

ie. cone still moves away from the box when the bass hits

By opening the boot you are also loosing any pressure that is in the cabin which can be why a lot of subs may appear to sound like poo once you pop the boot.

Very loosely put, the more pressure that is inside the cabin the louder it is going to be.

Having a quality sub box is more important than the sub itself or just as. Generally porting is more efficient = louder with less power but if the sub is not designed for a ported box it may end up being worse off.

If you're going to give a demo give it inside the car or just open the window/door?

Edited by G2GLOL
nveous Contributor

nveous

Posted
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Posted

I understand what your saying, i have made sure that they are out of phase so that they are firing into the enclosure... hmmm i shall keep doin more research into thanks guys...

Anymore advice would be greatly appreciated.

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